CN102119557B - Radio base station device and mobile terminal device - Google Patents
Radio base station device and mobile terminal device Download PDFInfo
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- CN102119557B CN102119557B CN2009801311611A CN200980131161A CN102119557B CN 102119557 B CN102119557 B CN 102119557B CN 2009801311611 A CN2009801311611 A CN 2009801311611A CN 200980131161 A CN200980131161 A CN 200980131161A CN 102119557 B CN102119557 B CN 102119557B
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- 238000004891 communication Methods 0.000 claims description 104
- 230000002093 peripheral effect Effects 0.000 claims description 22
- 238000001514 detection method Methods 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 description 11
- 239000013307 optical fiber Substances 0.000 description 11
- 230000015572 biosynthetic process Effects 0.000 description 8
- 238000003786 synthesis reaction Methods 0.000 description 7
- 238000010295 mobile communication Methods 0.000 description 6
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- 125000004122 cyclic group Chemical group 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/0005—Control or signalling for completing the hand-off
- H04W36/0055—Transmission or use of information for re-establishing the radio link
- H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/022—Site diversity; Macro-diversity
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W36/00—Hand-off or reselection arrangements
- H04W36/24—Reselection being triggered by specific parameters
- H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Abstract
Provided are a radio base station device and a mobile terminal device which can perform cell selection at a high-speed cell switching cycle upon a handover. The radio base station device includes: a plurality of transmission/reception units (1b, 1c) which can extend to a far position; an FCS application judgment unit (111) which judges whether to apply a high-speed cell selection upon a handover in accordance with information from the mobile terminal device; and a multi-scheduling control unit (110) which controls whether to perform or stop transmission by a first and a second transmission/reception unit if the FCS application judgment unit (111) has judged to apply the FCS.
Description
Technical field
The present invention relates to radio base station apparatus and mobile terminal apparatus in next generation mobile communication system.
Background technology
Generally, in the mobile communication of honeycomb mode, when mobile terminal apparatus Cong Yige community moves to another community, carry out the switching (handover) be used to the radio base station apparatus that switches communication counterpart.About the handoff functionality below data link layer, the grand diversity (macro diversity) by minizone guarantees that data link layer is with lower required QoS (Quality of Service; Service quality).In the switching of minizone, considering high-speed packet scheduling and ARQ (Automatic Repeat Request; Automatic repeat request), in situation, wish that the community switching cycle is 100ms.
On the other hand, at UMTS (Universal Mobile Telecommunications System; Universal mobile telecommunications system) in network, take improve efficiency of frequency employment, raisings data rate is purpose, by employing HSDPA (High Speed Downlink Packet Access; High-speed downlink packet accesses) and HSUPA (High Speed Uplink Packet Access; High Speed Uplink Packet accesses), thus bring into play to greatest extent (the Wideband Code Division Multiple Access with W-CDMA; Wideband Code Division Multiple Access (WCDMA)) be the feature of basic system.For this UMTS network, using further high data rate, low postpone etc. to study Long Term Evolution (LTE:Long Term Evolution) (non-patent literature 1) as purpose.In addition, in the UMTS network, turn to purpose with further broad in band and high speed, also study the follow-up system (for example, senior LTE (LTE-A), senior IMT (IMT-A)) of LTE.
The prior art document
Non-patent literature
Non-patent literature 1:3GPP, TR25.912 (V7.1.0), " Feasibility study for EvolvedUTRA and UTRAN ", Sept.2006
Summary of the invention
The problem that invention will solve
In follow-on mobile communication system as described above, the grand diversity Xia De community switching cycle during for switching also requires to carry out more at high speed, but present situation is there is no so far the method that can realize that switching cycle Xia De community, community is more at a high speed selected.
The present invention completes in view of this point, and its purpose is to provide a kind of radio base station apparatus and mobile terminal apparatus that can carry out the community selection under community switching cycle more at a high speed when switching.
For solving the scheme of problem
Radio base station apparatus of the present invention is characterised in that, comprising: send receiving-member, have and can extend to a plurality of transmission receiving elements at a distance from this device; Judging part is selected in the high speed community, based on the information from mobile terminal apparatus, judges that when the switching of this mobile terminal apparatus, whether applying the high speed community selects; And control assembly, when in judging part is selected in described high speed community, being judged to be application high speed community and selecting, control respectively the transmission of described a plurality of transmission receiving elements/transmission and stop.
The invention effect
In the present invention, at radio base station apparatus, based on the information from mobile terminal apparatus, judge that when switching, whether applying the high speed community selects, when being judged to be the selection of application high speed community, controlling at least one transmission that sends receiving element/transmission and stop.The control that this transmission/transmission stops can being carried out in the lump to the transmission receiving element that extends to transmission receiving element at a distance and arrange in this device, concentrates in grand minute when switching, can under community switching cycle more at a high speed, carry out the community selection.
The accompanying drawing explanation
Fig. 1 means the radio base station apparatus of embodiments of the present invention 1 and the figure of mobile terminal apparatus.
Fig. 2 means the figure of schematic configuration of the radio base station apparatus of embodiments of the present invention 1.
(a)～(c) of Fig. 3 means the figure of the form of Downlink Control Information.
Fig. 4 means the figure of schematic configuration of the mobile terminal apparatus of embodiments of the present invention 1.
(a)～(c) of Fig. 5 means the figure to the form of the feedback use of the communication environment information of radio base station apparatus.
(a) of Fig. 6, (b) mean the figure of application of the FCS of control channel and data channel.
Fig. 7 means the figure of schematic configuration of the radio base station apparatus of embodiments of the present invention 2.
Fig. 8 means the figure of schematic configuration of the mobile terminal apparatus of embodiments of the present invention 2.
Embodiment
Below, the execution mode that present invention will be described in detail with reference to the accompanying.
(execution mode 1)
Fig. 1 means the radio base station apparatus of embodiments of the present invention and the figure of mobile terminal apparatus.In the wireless communication system formed by this radio base station apparatus and mobile terminal apparatus, as multiplex mode, downgoing line (down link) is used to OFDMA (Orthogonal Frequency DivisionMultiple Access; OFDM), uplink (up link) is used to SC-FDMA (Single Carrier Frequency Division Multiple Access; Single-carrier frequency division multiple access).
Radio base station apparatus of the present invention has structure shown in Figure 1.At least one that this radio base station apparatus is included in the transmission receiving element 1a of main device 1 interior setting, extend at a distance by optical fiber 3 sends receiving element 1b, 1c.This radio base station apparatus 1 will send the processing unit (baseband processing unit that receiving element 1aDe community is used, call control process unit etc.), send the processing unit (baseband processing unit that receiving element 1bDe community is used, call control process unit etc.), send the processing unit (baseband processing unit that receiving element 1cDe community is used, call control process unit etc.) all be provided in main device 1, and then, have and carry out in the lump for to sending receiving element 1a, 1b, the community separately of 1c sends/sends the multi-cell scheduling control unit described later of the scheduling stopped, and be used to determining whether the FCS identifying unit described later of application high speed community selection (Fast Cell Selection (FCS)).In addition, sending receiving element 1b, 1c is extended at a distance by optical fiber 3.
In structure shown in Figure 1, namely have by optical fiber 3 and be extended at a distance at least one and send receiving element 1b, 1c, and the processing unit separately that sends receiving element 1b, 1c is provided in main device 1, in addition, multi-cell scheduling control unit and FCS identifying unit focus in the structure of main device 1, the processing unit of using due to the downgoing line to peripheral cell focuses on main device 1, therefore can carry out in the lump the scheduling of the transmitted signal of using for the downgoing line of peripheral cell De Ge community.In addition, can, by by each, being sent the uplink signal of receiving element 1a, 1b, 1c reception, via optical fiber 3, the communication environment information (communication environment information etc.) that each sends between receiving element 1a, 1b, 1c and mobile terminal apparatus 2 be pooled to main device 1 side.Therefore, can determine whether application FCS based on these information.Owing to can carrying out that such FCS application is judged and for the scheduling of the down link signal of each community, the community that therefore can carry out is more at a high speed selected.In addition, send receiving element 1b, 1c and not necessarily will extend at a distance, and in main device 1, also can have a plurality of transmission receiving elements.Perhaps, can be also in main device 1, not have the structure that sends receiving element 1a.In addition, be used to the cable that connects main device 1 and the transmission receiving element 1b, the 1c that are extended, also can use optical cable cable in addition.
In this structure, in the switching of minizone, based on the communication environment information from mobile terminal apparatus 2, determine whether and need application FCS, judge namely whether mobile terminal apparatus 2 is in cell edge (edge).Owing to when mobile terminal apparatus 2 is in cell edge, need to applying FCS, therefore apply FCS (FCS pattern).In the FCS pattern, from the best community of communication environment peripheral cell (transmission receiving element), send down link signal, and stop from other communities the transmission of (transmission receiving element).
Whether need to apply FCS, be the judgement (cell edge identification) whether mobile terminal apparatus 2 is in cell edge, carry out such as contrast signal received power (Reference Signal Received Power:RSRP) of the identifying information that preferably uses peripheral cell (community ID) and this community etc.In this case, obtain the RSRP of peripheral cell (for example, handover source and switching destination), and compare both RSRP, whether judge within the limits prescribed according to both differences.This is the cause of following consideration: if the difference of both RSRP within the limits prescribed, mobile terminal apparatus 2 is not to send receiving element near one of them, but equally far, namely is in cell edge apart from both sides' transmission receiving element.
Fig. 2 means the figure of structure of the radio base station apparatus of embodiments of the present invention.Radio base station apparatus shown in Figure 2 is the device that only generates the intrinsic contrast signal in community.Transmit amplifier 109a, 109b, the 109c that radio base station apparatus shown in Figure 2 is mainly used by the processing unit of a plurality of peripheral cells (being 3 communities here) (community #1 with processing unit, community #2 with processing unit, community #3 processing unit), #1, community, each community #2, community #3, determine whether the FCS identifying unit 111 of application FCS, carry out the multi-cell scheduling control unit that transmission/transmissions stops 110 formations for #1, community, each community #2, community #3 in the lump.Transmit amplifier 109a, 109b, 109c are the structures that is included in respectively above-mentioned transmission receiving element (the transmission receiving element 1a in Fig. 1,1b, 1c), when sending community #1 transmitted signal, community #2 transmitted signal, community #3 transmitted signal, use respectively.In addition, this transmit amplifier 109b, 109c carry respectively to by extension of optical fiber, being arranged on transmission receiving element at a distance as shown in Figure 1.In the processing unit of ，Ge community, comprise respectively in addition receiving system processing unit (not shown).
Each processing unit is mainly by the Downlink Control Information generation unit 101 generated for the control information (control signal) that mobile terminal apparatus is sent, the Downlink Control Information coded/modulated unit 102 that Downlink Control Information is encoded and modulated, generate the descending RS sequence generating unit 103 of contrast signal (Reference Signal:RS) sequence (the intrinsic contrast signal sequence in community) of the channel estimating that is used for mobile terminal apparatus, the descending transmission data generating unit 104 of generation to the data of mobile terminal apparatus transmission, descending transmission data encoding/modulating unit 105 that descending transmission data are encoded and modulated, Downlink Control Information after coded/modulated and descending transmission data and descending RS sequence are carried out to multiplexing down channel Multiplexing Unit 106, signal after channel multiplexing is carried out to IFFT (Inverse Fast FourierTransform, inverse fast fourier transform) the IFFT unit 107 of computing, to additional CP (the Cyclic Prefix of the signal after the IFFT computing, Cyclic Prefix) CP extra cell 108 forms.In the processing unit of Fig. 2 Zhong，Zai community #1, put down in writing in the processing unit of processing unit, community #3 of aforesaid each processing block ，Dan community #2 and included too aforesaid each processing block.
FCS application identifying unit 111 (is for example judged required information from the notified FCS application of mobile terminal apparatus, whether mobile terminal apparatus (for example is in cell edge, within the limits prescribed whether the difference of RSRP) information), this FCS application judges that required information obtains according to receiving signal in mobile terminal apparatus.Signaling in the upper layer of this notice such as use etc. is carried out.The FCS application message (result of determination) of judging in FCS application identifying unit 111, the information of namely whether apply FCS, as required which community being carried out to FCS are output to Downlink Control Information generation unit 101, descending transmission data generating unit 104 and the multi-cell scheduling control unit 110 in the processing unit of each community.Namely, if FCS application identifying unit 111 is judged required information from the notified FCS application of mobile terminal apparatus, whether apply the judgement (carrying out when mobile terminal apparatus is in cell edge the judgement of applying FCS) of FCS, and the information (FCS application message) that will apply FCS outputs to the generation unit 101 of the Downlink Control Information of each community, and, in order to carry out the selection of high speed community, also it is outputed to multi-cell scheduling control unit 110.
The FCS application message also can be notified to mobile terminal apparatus.By to mobile terminal apparatus, notifying the FCS application message, thereby in mobile terminal apparatus, can obtain all communication environment information of peripheral cell, perhaps determine the best community of communication environment, perhaps ask the relativeness of the communication environment between community, and the relativeness of these communication environment information, cell information, communication environment is fed back to radio base station apparatus.The notice of this FCS application message, such as using signaling in upper layer etc. to carry out, also can send to mobile terminal apparatus by Dedicated Control Channel etc.
In addition, by mobile terminal apparatus notice FCS application message, can in mobile terminal apparatus, also utilize the intrinsic contrast signal in community (public contrast signal) to carry out channel estimating except the intrinsic contrast signal of terminal (special-purpose contrast signal).Therefore that is,, because mobile terminal apparatus can be identified the situation of the cell change sent by the FCS application message, can use the intrinsic contrast signal in community based on the form of each community to carry out channel estimating to each community.By the channel estimating except the intrinsic contrast signal of terminal, also having used like this channel estimating of the intrinsic contrast signal in community, thereby can carry out the channel estimating that precision is high, and in FCS application judgement, the precision of required communication environment information uprises.
In addition, in the situation that the FCS application message is not notified to mobile terminal apparatus, to feed back to radio base station apparatus based on the communication environment information of the channel estimating of having used the intrinsic contrast signal of terminal, radio base station apparatus is judged according to based on the communication environment information of this single community, carrying out the FCS application.
The FCS application message outputs to Downlink Control Information generation unit 101 from FCS application identifying unit 111 as described above.(beyond during application FCS), comprise user ID (terminal identification information) and information of radio resource allocation etc. in Downlink Control Information usually the time.In the situation that mobile terminal apparatus receives this Downlink Control Information, at mobile terminal apparatus, check user ID, only have the mobile terminal apparatus corresponding with user ID can decode to information of radio resource allocation (blind coding).
When application FCS, FCS information is output to Downlink Control Information generation unit 101.At Downlink Control Information generation unit 101, will append to Downlink Control Information corresponding to the cell identification information (cell identifier) of the transmission receiving element sent.For example, Downlink Control Information generation unit 101 can, when application FCS, generate and comprise the identifying information of the community sent in interior control signal.That is, can adopt the form as shown in Fig. 3 (a) to generate downgoing control signal.The mobile terminal apparatus that receives such Downlink Control Information can be decoded to cell identification information by blind coding, can identify the community sent thus.Therefore, mobile terminal apparatus can be identified the intrinsic contrast signal in community and belong to which community (being the form of which community), can use thus the channel estimating of the intrinsic contrast signal in community.
In addition, Downlink Control Information generation unit 101 also can comprise power information and generate control signal.That is, can be as shown in Fig. 3 (b), additional power information outside cell identification information.By so additional power information, the transmitted power in the time of can be to mobile terminal apparatus notice application FCS, therefore can send with stronger transmitted power when common when application FCS.In addition, Downlink Control Information generation unit 101 also can comprise the information had or not of the intrinsic contrast signal of terminal and generate control signal.That is, can be as shown in Fig. 3 (c), the intrinsic contrast signal of attaching terminal has or not information outside cell identification information.By the information that has or not of the intrinsic contrast signal of such attaching terminal, can, to the utilization of the intrinsic contrast signal of mobile terminal apparatus notification terminal, therefore, in mobile terminal apparatus, can use the additional intrinsic contrast signal of terminal utilized to carry out channel estimating.
Multi-cell scheduling (selection of high speed community) control unit 110 is when having accepted the FCS application message from FCS application identifying unit 111, carry out the scheduling for many communities, make from the best transmission receiving element (community) of communication environment mobile terminal apparatus is sent, and from other transmission receiving element (community), mobile terminal apparatus is not sent.Namely, multi-cell scheduling control unit 110 is under the FCS pattern, based on the communication environment information of the peripheral cell sent from mobile terminal apparatus (for example, CQI (Channel Quality Indicator, CQI) and PMI), determine the community that communication environment is best, and indicate the generation unit 101,104 of downstream signal of the processing unit of this community to generate signals (multi-cell scheduling).Thus, only have from the transmission receiving element of the best community of communication environment and send, be stopped from the transmission of the transmission receiving element of other communities.110 pairs of a plurality of communities of multi-cell scheduling control unit comprise in the lump the transmission community and send the being controlled at interior scheduling that stops community.
Fig. 4 means the figure of structure that carries out the mobile terminal apparatus of radio communication with radio base station apparatus shown in Figure 2.Mobile terminal apparatus shown in Figure 4 is mainly removed CP by the signal sending from radio base station apparatus CP removes unit 201, carry out to received signal the FFT unit 202 of FFT computing, signal after the FFT computing is separated into to control information, the down channel separative element 203 of contrast signal and data, the Downlink Control Information receiving element 204 of the reception & disposal that the Downlink Control Information separated is stipulated, use the contrast signal separated to carry out the channel estimating unit 205 of channel estimating, according to channel estimation results, select to carry out the channel estimating community selected cell 206 of the transmission community of reception & disposal, the descending transmission data receiver unit 207 of the reception & disposal that the descending transmission data of separating are stipulated, based on channel estimation results, estimate the communication environment information estimator unit 208 of communication environment (CQI and PMI), the multi-cell communication environmental information generation unit 209 of the communication environment Information generation communication environment information of Cong Ge community forms.Channel estimating unit 205 and communication environment information estimator unit 208 arrange each community.
In the mobile terminal apparatus of such structure, in the situation that from radio base station apparatus notified the FCS application message, this FCS application message is output to Downlink Control Information receiving element 204 and multi-cell communication environmental information generation unit 209.
If multi-cell communication environmental information generation unit 209 is accepted the FCS application message, (for example use the communication environment information of peripheral cell, CQI and PMI) generate the situation (multi-cell communication environmental information) of the communication environment of peripheral cell, and report to radio base station apparatus (to the feedback of radio base station apparatus).Thus, radio base station apparatus can know that the communication environment of which community in peripheral cell is best.
In the situation that mobile terminal apparatus can be enumerated the whole bag of tricks to radio base station apparatus feedback communication environmental information.For example, as the communication environment information of relevant peripheral cell, by comprise for the communication environment information of each community interior, be such form shown in Fig. 5 (a), all report the communication environment information of peripheral cell.Perhaps, communication environment information as relevant peripheral cell, the communication environment information of the community that the identifying information by comprising the best community of communications status and described communications status are best interior, be such form shown in Fig. 5 (b), the communication environment information of each community and determine the best community of communications status relatively, and report the communication environment information of the identifying information He Gai community of this community.Perhaps, communication environment information as relevant peripheral cell, by comprise for the communication environment information of the communication environment information of specific community and other peripheral cells with respect to the relative value of the described information of communication environment for specific community interior, be such form shown in Fig. 5 (c), report the communication environment information of specific community (for example, the community of handover source) and with respect to the relative value of this communication environment information.
The reception & disposal that 204 pairs of Downlink Control Information of Downlink Control Information receiving element are stipulated, for example blind coding.Whether can identify thus, is the data that mail to this device.And, if identify, be the data that mail to this device, this information is sent to descending transmission data receiver unit 207, thus the reception & disposal that descending transmission data are stipulated, for example demodulation, decoding.
If notified FCS application message in Downlink Control Information receiving element 204, in the time of and change the reception form that FCS uses and receive, the time and increase the number of cells received.For example, in the situation that application FCS considers following situation: only data channel (PDSCH) is carried out the situation of FCS and as shown in Fig. 6 (b), data channel (PDSCH) and control channel (PDCCH) together carried out to the situation of FCS as shown in Fig. 6 (a).About the situation as shown in Fig. 6 (b), because data channel and control channel send from same community, therefore the community received can be one, but about the situation as shown in Fig. 6 (a), data channel and control channel send from different communities sometimes.In this case, because needs receive the signal from the Liang Ge community, therefore under these circumstances, Downlink Control Information receiving element 204 increases the number of cells received.
Below, the situation by radio base station apparatus shown in Figure 2 and mobile communications device application FCS shown in Figure 4 is described.Here, illustrate and only use the intrinsic contrast signal in community to carry out the situation of channel estimating.
At first, judge required information (for example, the difference of RSRP is within the limits prescribed information whether) from mobile terminal apparatus notice FCS application, this FCS application judges that required information obtains according to receiving signal in mobile terminal apparatus.Signaling in the upper layer of this notice such as use etc. is carried out.Required information is judged in application if the FCS application identifying unit 111 of radio base station apparatus obtains FCS, determines whether application FCS.While in FCS application identifying unit 111, being judged to be application FCS, the FCS application message is output to Downlink Control Information generation unit 101 and the multi-cell scheduling control unit 110 of the processing unit of each community.
To multi-cell scheduling control unit 110, send communication environment information (CQI and PMI) from mobile terminal apparatus.Then, in multi-cell scheduling control unit 110, dispatch based on this best community of communication environment Information Selection communication environment.At this moment, mobile terminal apparatus sends communication environment information with the form shown in Fig. 5 (a)～(c).This schedule information is sent to Downlink Control Information generation unit 101 and the descending transmission data generating unit 104 of the processing unit of the best community of communication environment (community be scheduled).Then, the Downlink Control Information generation unit 101 of the community that communication environment is best and descending transmission data generating unit 104 generate control information and send data based on this schedule information, and the control information generated and transmission data are sent out via corresponding transmit amplifier.For example, if the best community of communication environment is community #2, in the Downlink Control Information generation unit 101 of Ze Zai community #2 and descending transmission data generating unit 104, generate control information and send data, and this control information is sent out from via optical fiber, being arranged on transmit amplifier 109b at a distance with the transmission data.
Mobile terminal apparatus is accepted the FCS application message from radio base station apparatus, and outputs to Downlink Control Information receiving element 204 and multi-cell communication environmental information generation unit 209.In addition, in mobile communications device, carry out blind coding by Downlink Control Information receiving element 204, whether identification is the control information of this device.This identifying information is sent to descending transmission data receiver unit 207.On the other hand, in mobile terminal apparatus, channel estimating unit 205 is used the intrinsic contrast signal in community comprised in the down link signal from radio base station apparatus to carry out channel estimating.Resulting channel estimation value is for the reception & disposal of descending transmission data receiver unit 207.Obtain thus descending transmission data.
In addition, as shown in Fig. 6 (a), in the situation that data channel and control channel send from different communities, Downlink Control Information receiving element 204 can increase the number of cells received, and the community of therefore carrying out channel estimating also can increase.Therefore, the identifying information obtained by Downlink Control Information receiving element 204 is output to channel estimating community selected cell 206.Then, channel estimating community selected cell 206 is used this identifying information, always in a plurality of channel estimation values of self-channel estimation unit 205, selects the channel estimation value for the reception & disposal of descending transmission data.
The channel estimation value of each community of being obtained by channel estimating unit 205 is sent to communication environment information estimator unit 208, and communication environment is estimated in each community.Then, the communication environment information of this each community is sent to multi-cell communication environmental information generation unit 209.In multi-cell communication environmental information generation unit 209, generate according to the communication environment information of each community the communication environment information that feeds back to radio base station apparatus.This communication environment information is for example used the form as shown in Fig. 3 (a)～(c) to be fed back to radio base station apparatus.Then, in the multi-cell scheduling control unit 110 of radio base station apparatus, dispatch based on this best community of communication environment Information Selection communication environment.
Like this, in the system of present embodiment, at radio base station apparatus, while based on the information from mobile terminal apparatus, judging switching, whether apply FCS, be judged to be application during FCS, control by extension of optical fiber at a distance at least one send receiving element and in this device the transmission/transmission of the transmission receiving element of setting stop.The control that this transmission/transmission stops is to by the transmission receiving element of extension of optical fiber to transmission receiving element at a distance and setting in this device, carrying out in the lump, therefore concentrate grand minute when switching, can under community switching cycle more at a high speed, carry out the community selection.
(execution mode 2)
In the present embodiment, illustrate and except the intrinsic contrast signal in community, use the intrinsic contrast signal of terminal to carry out the situation of channel estimating.
Fig. 7 means the figure of structure of the radio base station apparatus of execution mode 2.In addition, in Fig. 7, give the label identical with Fig. 2 for the part identical with Fig. 2, and omit its detailed explanation.In radio base station apparatus shown in Figure 7, have be used to generating the special-purpose RS sequence generating unit 112 of the intrinsic contrast signal of terminal (special-purpose RS).Input is from the FCS application message of FCS application identifying unit 111 in this special use RS sequence generating unit 112, if inputted the FCS application message, special-purpose RS sequence generating unit 112 generates special-purpose RS.The special-purpose RS generated is sent to that down channel Multiplexing Unit 106 is rear to be re-used as down link signal.
Fig. 8 means the figure of structure of the mobile terminal apparatus of execution mode 2.In addition, in Fig. 8, give the label identical with Fig. 4 for the part identical with Fig. 4, and omit its detailed explanation.In radio base station apparatus shown in Figure 8, have and use the intrinsic contrast signal of terminal (special-purpose RS) to carry out the special-purpose RS channel estimating unit 210 of channel estimating, and replace channel estimating community selected cell 206 to be provided with the channel estimating community selection/synthesis unit 211 to using the intrinsic contrast signal in community (public RS) channel estimation value obtained and the channel estimation value that uses special-purpose RS acquisition to synthesize or select.
Input is from the FCS application message of FCS application identifying unit 111 in channel estimating community selection/synthesis unit 211, if inputted the FCS application message, selection/synthesis unit 211 selections in channel estimating community are to utilize to have used the channel estimation value of the intrinsic contrast signal of terminal or the channel estimation value that the intrinsic contrast signal in community has been used in utilization, perhaps, to the channel estimation value that used the intrinsic contrast signal of terminal with used the channel estimation value of the intrinsic contrast signal in community to synthesize.
Like this, by outside the intrinsic contrast signal in community, using the intrinsic contrast signal of terminal, carry out channel estimating, thereby the precision of channel estimation value uprises, and can improve the quality of reception of descending transmission data.
Below, the situation by radio base station apparatus shown in Figure 7 and radio base station apparatus application FCS shown in Figure 8 is described.Here, illustrate and except the intrinsic contrast signal in community, use the intrinsic contrast signal of terminal to carry out the situation of channel estimating.
At first, judge required information (for example, the difference of RSRP is within the limits prescribed information whether) from mobile terminal apparatus notice FCS application, this FCS application judges that required information obtains according to receiving signal in mobile terminal apparatus.Signaling in the upper layer of this notice such as use etc. is carried out.Required information is judged in application if the FCS application identifying unit 111 of radio base station apparatus obtains FCS, determines whether application FCS.While in FCS application identifying unit 111, being judged to be application FCS, the FCS application message is output to Downlink Control Information generation unit 101, multi-cell scheduling control unit 110 and the special-purpose RS sequence generating unit 112 of the processing unit of each community.
To multi-cell scheduling control unit 110, send communication environment information (CQI and PMI) from mobile terminal apparatus.Then, in multi-cell scheduling control unit 110, dispatch based on this best community of communication environment Information Selection communication environment.At this moment, mobile terminal apparatus sends communication environment information with the form shown in Fig. 5 (a)～(c).This schedule information is sent to Downlink Control Information generation unit 101 and the descending transmission data generating unit 104 of the processing unit of the best community of communication environment (community be scheduled).Then, the Downlink Control Information generation unit 101 of the community that communication environment is best and descending transmission data generating unit 104 generate control information and send data based on this schedule information, and the control information generated and transmission data are sent out via corresponding transmit amplifier.For example, if the best community of communication environment is community #2, in the Downlink Control Information generation unit 101 of Ze Zai community #2 and descending transmission data generating unit 104, generate control information and send data, and this control information is sent out from via optical fiber, being arranged on transmit amplifier 109b at a distance with the transmission data.In addition, if the FCS application message is sent to special-purpose RS sequence generating unit 112, generate the intrinsic contrast signal of terminal, and the intrinsic contrast signal of this terminal is multiplexed to down link signal.
Mobile terminal apparatus is accepted the FCS application message from radio base station apparatus, and outputs to Downlink Control Information receiving element 204 and multi-cell communication environmental information generation unit 209.In addition, in mobile communications device, carry out blind decoding by Downlink Control Information receiving element 204, whether identification is the control information of this device.This identifying information is sent to descending transmission data receiver unit 207.On the other hand, in mobile terminal apparatus, channel estimating unit 205 is used the intrinsic contrast signal in community comprised in the down link signal from radio base station apparatus to carry out channel estimating.In addition, at special-purpose RS, with in channel estimating unit 210, use the intrinsic contrast signal of terminal to carry out channel estimating.These channel estimation values are sent to channel estimating community selection/synthesis unit 211.Then, in channel estimating community selection/synthesis unit 211, channel estimation value is selected or synthesized.This channel estimation value is for the reception & disposal of descending transmission data receiver unit 207.Obtain thus descending transmission data.
In addition, as shown in Fig. 6 (a), in the situation that data channel and control channel send from different communities, Downlink Control Information receiving element 204 can increase the number of cells received, and the community of therefore carrying out channel estimating also can increase.Therefore, the identifying information obtained by Downlink Control Information receiving element 204 is output to channel estimating community selection/synthesis unit 211.Then, channel estimating community selection/synthesis unit 211 is used this identifying information, always in a plurality of channel estimation values of self-channel estimation unit 205, selects the channel estimation value for the reception & disposal of descending transmission data.
The channel estimation value of each community of being obtained by channel estimating unit 205 is sent to communication environment information estimator unit 208, and communication environment is estimated in each community.Then, the communication environment information of this each community is sent to multi-cell communication environmental information generation unit 209.In multi-cell communication environmental information generation unit 209, generate according to the communication environment information of each community the communication environment information that feeds back to radio base station apparatus.This communication environment information is for example used the form as shown in Fig. 3 (a)～(c) to be fed back to radio base station apparatus.Then, in the multi-cell scheduling control unit 110 of radio base station apparatus, dispatch based on this best community of communication environment Information Selection communication environment.
Like this, in the system of present embodiment, also at radio base station apparatus, while based on the information from mobile terminal apparatus, judging switching, whether apply FCS, be judged to be application during FCS, control by extension of optical fiber at a distance at least one send receiving element and in this device the transmission/transmission of the transmission receiving element of setting stop.The control that this transmission/transmission stops is to by the transmission receiving element of extension of optical fiber to transmission receiving element at a distance and setting in this device, carrying out in the lump, therefore concentrate grand minute when switching, can under community switching cycle more at a high speed, carry out the community selection.
The invention is not restricted to above-mentioned execution mode, can carry out various changes and implement.For example, only otherwise depart from the scope of the present invention, can suitably change and implement for the parameter of the number that means number of cells, processing unit in above-mentioned explanation, treatment step, communication environment.In addition, can not depart from the scope of the present invention yet and suitably implement after changing.
Claims (10)
1. a radio base station apparatus, is characterized in that, comprising:
Send receiving-member, have and can extend to a plurality of transmission receiving elements at a distance from this device;
Judging part is selected in the high speed community, based on the information from mobile terminal apparatus, judges that when the switching of this mobile terminal apparatus, whether applying the high speed community selects;
The notice parts, while in described high speed community, selecting in detection unit to be judged to be the selection of application high speed community, notify high speed community selection information to described mobile terminal apparatus; And
Control assembly, control respectively each of described a plurality of transmission receiving elements, make while in described high speed community, selecting in judging part to be judged to be the selection of application high speed community, according to described high speed community, selecting information corresponding and from the communication environment information of the peripheral cell of described mobile terminal apparatus report, from the transmission receiving element of communication environment best cell, send, stop from the transmission of the transmission receiving element of other communities.
2. radio base station apparatus as claimed in claim 1, is characterized in that, comprising:
Contrast signal generates parts, when being judged to be the selection of application described high speed community, except the intrinsic contrast signal in community, generates the intrinsic contrast signal of terminal.
3. radio base station apparatus as claimed in claim 1 or 2, is characterized in that, comprising:
Control signal generates parts, when being judged to be the selection of application described high speed community, generating and includes the identifying information of the transmission receiving element sent in interior control signal.
4. radio base station apparatus as claimed in claim 3, is characterized in that,
Described control signal generates parts and comprises power information and generate control signal.
5. radio base station apparatus as claimed in claim 3, is characterized in that,
Described control signal generates parts and comprises the information had or not of the intrinsic contrast signal of terminal and generate control signal.
6. a mobile terminal apparatus, is characterized in that, comprising:
Estimation unit, used and carry out channel estimating from the intrinsic contrast signal in the community of radio base station apparatus;
Communication environment Information generation parts, generate the communication environment information of being obtained by described estimation unit; And
The communication environment information reporting of described communication environment Information generation parts generation is given to the parts of described radio base station apparatus,
When application high speed community was selected, described communication environment Information generation parts, when from described radio base station apparatus, obtaining high speed community selection information, generated the communication environment information of relevant peripheral cell.
7. mobile terminal apparatus as claimed in claim 6, is characterized in that,
The communication environment information of described relevant peripheral cell comprises the communication environment information about each community.
8. mobile terminal apparatus as claimed in claim 6, is characterized in that,
The described information of communication environment about peripheral cell comprises the communication environment information of the identifying information of the best community of communications status and the best community of described communications status.
9. mobile terminal apparatus as claimed in claim 6, is characterized in that,
The communication environment information of described relevant peripheral cell comprises about the communication environment information of the communication environment information of specific community and other peripheral cells relative value with respect to the described information of communication environment about specific community.
10. mobile terminal apparatus as described as any one of claim 6 to 9, is characterized in that,
When application described high speed community was selected, described estimation unit was also used the intrinsic contrast signal of terminal to carry out channel estimating except the intrinsic contrast signal in described community.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310506777.0A CN103501522B (en) | 2008-08-11 | 2009-07-27 | Radio base station device, mobile terminal device, and radio communication method |
Applications Claiming Priority (3)
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| JP2008207505A JP5103323B2 (en) | 2008-08-11 | 2008-08-11 | Radio base station apparatus and mobile terminal apparatus |
| JP207505/08 | 2008-08-11 | ||
| PCT/JP2009/063321 WO2010018742A1 (en) | 2008-08-11 | 2009-07-27 | Radio base station device and mobile terminal device |
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| CN201310506777.0A Division CN103501522B (en) | 2008-08-11 | 2009-07-27 | Radio base station device, mobile terminal device, and radio communication method |
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| CN102119557A CN102119557A (en) | 2011-07-06 |
| CN102119557B true CN102119557B (en) | 2013-11-27 |
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| KR101498079B1 (en) * | 2010-03-04 | 2015-03-03 | 엘지전자 주식회사 | Apparatus of transmitting and receiving signal in distributed antenna system |
| CN102271354A (en) * | 2010-06-02 | 2011-12-07 | 中兴通讯股份有限公司 | Link adaptation method for long term evolution (LTE) system, base station and terminal |
| US9485737B2 (en) * | 2011-12-26 | 2016-11-01 | Kt Corporation | Controlling radio units to transmitting signal with different transmission power |
| US9357505B2 (en) | 2011-12-26 | 2016-05-31 | Kt Corporation | Processing digital signal |
| EP2907251B1 (en) * | 2012-10-09 | 2019-12-11 | Telefonaktiebolaget LM Ericsson (publ) | Apparatuses and methods for estimating power using data signals |
| US10743224B2 (en) * | 2014-05-29 | 2020-08-11 | Sony Corporation | Device and method |
| JP2018056603A (en) * | 2015-02-13 | 2018-04-05 | シャープ株式会社 | Base station device, terminal device, and communication method |
| US10278168B2 (en) * | 2017-05-04 | 2019-04-30 | At&T Intellectual Property I, L.P. | Multi-stage segmented downlink control information with reduced overhead |
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| WO2010018742A1 (en) | 2010-02-18 |
| KR20110039469A (en) | 2011-04-18 |
| KR101597667B1 (en) | 2016-02-25 |
| US9232447B2 (en) | 2016-01-05 |
| CN103501522B (en) | 2017-01-04 |
| US20140378139A1 (en) | 2014-12-25 |
| CN102119557A (en) | 2011-07-06 |
| EP2315476B1 (en) | 2018-07-04 |
| EP2315476A1 (en) | 2011-04-27 |
| JP5103323B2 (en) | 2012-12-19 |
| EP2315476A4 (en) | 2016-05-25 |
| CN103501522A (en) | 2014-01-08 |
| JP2010045550A (en) | 2010-02-25 |
| US20110183673A1 (en) | 2011-07-28 |
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